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Wu X, Li L, Jinhabure, Xiaofeng, Eerdunchaolu. Radix Sophorae Flavescentis of Sophora flavescens Aiton inhibits LPS-induced macrophage pro-inflammatory response via regulating CFHR2 expression. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118210. [PMID: 38641074 DOI: 10.1016/j.jep.2024.118210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/04/2024] [Accepted: 04/15/2024] [Indexed: 04/21/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Long-term chronic inflammation often leads to chronic diseases. Although Sophora flavescens has been shown to have anti-inflammatory properties, its detailed molecular mechanism is still unknown. AIM OF STUDY This study investigated the effect of Radix Sophorae Flavescentis on the LPS-induced inflammatory response in macrophages. MATERIALS AND METHODS LPS was used to induce the peritoneal macrophages to simulate the inflammatory environment in vitro. Different concentrations of Radix Sophorae Flavescentis-containing (medicated) serum were used for intervention. The peritoneal macrophages were identified by using hematoxylin-eosin and immunofluorescence staining. ELISA was used to measure the TNF-α and IL-6 expression to determine the concentration of LPS. ELISA and Western blot (WB) were used to detect the PGE2 and CFHR2 expression in each group, respectively. The lentiviral vector for interference and overexpression of the CFHR2 gene was constructed, packaged, and transfected into LPS-induced macrophages. The transfection efficiency was verified by WB. Then, ELISA was used to detect the TNF-α, PGE2, and IL-6 expression. WB was used to detect the CFHR2, iNOS, COX-2, TLR2, TLR4, IFN-γ, STAT1, and p-STAT1 expression. RESULTS The primary isolated cells were identified as macrophages. The LPS-treated macrophages exhibited significantly higher expression of PGE2 and CFHR2, and the inflammatory factors TNF-α and IL-6, as well as iNOS, COX-2, TLR2, TLR4, IFN-γ, STAT1, and p-STAT1 expression compared with the control group (P < 0.05). The TNF-α, PGE2, and IL-6 levels, as well as CFHR2, iNOS, COX-2, TLR2, TLR4, IFN-γ, STAT1, and p-STAT1 expression were considerably lower in the LPS-induced+10% medicated-serum group, LPS-induced+20% medicated-serum group, and shCFHR interference group compared with the LPS group (P < 0.05). CONCLUSION Radix Sophorae Flavescentis might mediate CFHR2 expression and play an important role in inhibiting the LPS-induced pro-inflammatory response of macrophages. Radix Sophorae Flavescentis could be a potential treatment for LPS-induced related inflammatory diseases.
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Affiliation(s)
- Xiaoying Wu
- Mongolian Medical College, Inner Mongolia Minzu University, Tongliao City, 028000, Inner Mongolia, PR China; Department of Mongolian Medicine, Liaoning Province Mongolian Medicine Hospital, Fuxin City, 123199, Liaoning, PR China.
| | - Li Li
- Second Department of Encephalopathy, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao City, 028007, Inner Mongolia, PR China.
| | - Jinhabure
- Medicated Bath Department, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao City, 028007, Inner Mongolia, PR China.
| | - Xiaofeng
- First Department of Encephalopathy, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao City, 028007, Inner Mongolia, PR China.
| | - Eerdunchaolu
- Mongolian Medical College, Inner Mongolia Minzu University, Tongliao City, 028000, Inner Mongolia, PR China.
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Choi J, Nguyen QN, Baek JY, Cho DE, Kang KS, Hahm DH, Jang TW, Park JH, Lee AY, Lee S. Beneficial role of Boehmeria nivea in health and phytochemical constituents. J Food Biochem 2022; 46:e14474. [PMID: 36209491 DOI: 10.1111/jfbc.14474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 09/02/2022] [Accepted: 09/27/2022] [Indexed: 01/14/2023]
Abstract
The leaf and stem extracts of Boehmeria nivea (BN) collected from three different regions in Korea were screened for their antioxidant, neuroprotective, estrogenic, insulin secretion, and α-glucosidase inhibitory activity. We also examined whether BN extracts regulate cancer cell growth, inflammatory-related gene expression, and lipid accumulation in cellular system. Leaf extracts possessed greater antioxidant, anti-proliferative in cancer cells, neuroprotective, estrogenic activity, and inhibitory effect on pro-inflammatory gene expression than stem extracts. Leaf and stem extracts inhibited lipid accumulation in three T3-L1 adipocytes but did not affect glucose-stimulated insulin secretion in INS-1 cells. We isolated and identified the phytochemical constituents in the n-butanol and ethyl acetate fractions of BN leaves by combining silica gel column chromatography with mass spectrometry and 1 H- and 13 C-NMR analysis. The active compounds (caffeic acid, isoquercitrin, p-coumaric acid, and rutin) exhibited ABTS and DPPH radical scavenging activity, which may contribute to the biological activities of BN leaf extract. An analytical method was developed to quantify marker compounds for the discrimination of BN collected from different regions. Our results support the use of this analysis method for accurate identification and quantification of marker compounds in BN for the development of functional foods. PRACTICAL APPLICATIONS: Boehmeria nivea (BN) has been used as a raw material for the textile industry or traditional herbal medicine. The current study established the biological activities and active components of BN. Our results showed that BN leaf and stem extracts exhibit antioxidant, neuroprotective, and estrogenic activity. BN leaf extract also inhibited cancer cell growth, inflammatory mediators and cytokines production, and lipid accumulation in vitro. Moreover, the bioactive compounds, such as caffeic acid, isoquercitrin, p-coumaric acid, and rutin, exert ABTS and DPPH radical scavenging activities. Therefore, BN could potentially be a promising source of bioactive phytochemicals for the development of functional foods or drugs.
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Affiliation(s)
- Jungwon Choi
- Department of Plant Science and Technology, Chung-Ang University, Anseong, Republic of Korea
| | - Quynh Nhu Nguyen
- Department of Preventive Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ji Yun Baek
- Department of Preventive Medicine, Gachon University, Seongnam, Republic of Korea
| | - Da-Eun Cho
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ki Sung Kang
- Department of Preventive Medicine, Gachon University, Seongnam, Republic of Korea
| | - Dae-Hyun Hahm
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Tae Won Jang
- Department of Pharmaceutical Science, Jungwon University, Goesan, Republic of Korea
| | - Jae Ho Park
- Department of Pharmaceutical Science, Jungwon University, Goesan, Republic of Korea
| | - Ah Young Lee
- Department of Food Science and Nutrition, Gyeongsang National University, Jinju, Republic of Korea
| | - Sanghyun Lee
- Department of Plant Science and Technology, Chung-Ang University, Anseong, Republic of Korea.,Natural Product Institute of Science and Technology, Anseong, Republic of Korea
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Tryptamine, a Microbial Metabolite in Fermented Rice Bran Suppressed Lipopolysaccharide-Induced Inflammation in a Murine Macrophage Model. Int J Mol Sci 2022; 23:ijms231911209. [PMID: 36232510 PMCID: PMC9570467 DOI: 10.3390/ijms231911209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Fermentation is thought to alter the composition and bioavailability of bioactive compounds in rice bran. However, how this process affects the anti-inflammatory effects of rice bran and the bioactive compounds that might participate in this function is yet to be elucidated. This study aimed to isolate bioactive compounds in fermented rice bran that play a key role in its anti-inflammatory function. The fermented rice bran was fractionated using a succession of solvent and solid-phase extractions. The fermented rice bran fractions were then applied to lipopolysaccharide (LPS)-activated murine macrophages to evaluate their anti-inflammatory activity. The hot water fractions (FRBA), 50% ethanol fractions (FRBB), and n-hexane fractions (FRBC) were all shown to be able to suppress the pro-inflammatory cytokine expression from LPS-stimulated RAW 264.7 cells. Subsequent fractions from the hot water fraction (FRBF and FRBE) were also able to reduce the inflammatory response of these cells to LPS. Further investigation revealed that tryptamine, a bacterial metabolite of tryptophan, was abundantly present in these extracts. These results indicate that tryptamine may play an important role in the anti-inflammatory effects of fermented rice bran. Furthermore, the anti-inflammatory effects of FRBE and tryptamine may depend on the activity of the aryl hydrocarbon receptor.
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Sophorolipid Suppresses LPS-Induced Inflammation in RAW264.7 Cells through the NF-κB Signaling Pathway. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27155037. [PMID: 35956987 PMCID: PMC9370320 DOI: 10.3390/molecules27155037] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 11/29/2022]
Abstract
Objectives: Biosurfactants with anti-inflammatory activity may alleviate skin irritation caused by synthetic surfactants in cleaning products. Sophorolipid (SL) is a promising alternative to synthetic surfactants. However, there are few reports on the anti-inflammatory activity of SL and the underlying mechanism. The purpose of this work is to verify that lipopolysaccharide (LPS)-induced inflammation could be inhibited through targeting the pathway of nuclear factor-κB (NF-κB) in RAW264.7 cells. Methods: The influence of SL on cytokine release was investigated by LPS-induced RAW264.7 cells using ELISA. The quantification of the protein expression of corresponding molecular markers was realized by Western blot analysis. Flow cytometry was employed to determine the levels of Ca2+ and reactive oxygen species (ROS). The relative expression of inducible nitric oxide synthase (INOS) and cyclooxygenase-2 (COX-2) was determined by RT-PCR. An immunofluorescence assay and confocal microscope were used to observe the NF-κB/p65 translocation from the cytoplasm into the nucleus. The likely targets of SL were predicted by molecular docking analysis. Results: SL showed anti-inflammatory activity and reduced the release of inflammatory cytokines including interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and nitric oxide (NO). The experimental results show that SL suppressed the Ca2+ and ROS levels influx in the LPS-induced RAW264.7 cells and alleviated the LPS-induced expression of iNOS and COX-2, the LPS-induced translocation of NF-κB (p65) from the cytoplasm into the nucleus, and the expression of phosphorylated proteins such as p65 and IκBα. Furthermore, molecular docking analysis showed that SL may inhibit inflammatory signaling by competing with LPS to bind TLR4/MD-2 through hydrophobic interactions and by inhibiting IKKβ activation through the hydrogen bonding and hydrophobic interactions. Conclusion: This study demonstrated that SL exerted anti-inflammatory activity via the pathway of NF-κB in RAW264.7 cells.
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Komuro M, Nagane M, Endo R, Nakamura T, Miyamoto T, Niwa C, Fukuyama T, Harashima H, Aihara N, Kamiie J, Suzuki R, Yamashita T. Glucosylceramide in T cells regulates the pathology of inflammatory bowel disease. Biochem Biophys Res Commun 2022; 599:24-30. [PMID: 35168060 DOI: 10.1016/j.bbrc.2022.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 02/01/2022] [Indexed: 12/21/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory disease in the colon characterized by excessive activation of T cells. Glycosphingolipids (GSLs) are composed of lipid rafts in cellular membranes, and their content is linked to immune cell function. In the present study, we investigated the involvement of GSLs in IBD. Microarray data showed that in IBD patients, the expression of only UDP-glucose ceramide glucosyltransferase (UGCG) decreased among the GSLs synthases. Ad libitum access to dextran sulfate sodium (DSS) resulted in decreased UGCG and glucosylceramide (GlcCer) content in mesenteric lymph nodes and T cells from the spleen. Furthermore, the knockdown of Ugcg in T cells exacerbated the pathogenesis of colitis, which was accompanied by a decrease in Treg levels. Treatment with GlcCer nanoparticles prevented DSS-induced colitis. These results suggested that GlcCer in T cells is involved in the pathogenesis of IBD. Furthermore, GlcCer nanoparticles are a potential efficacious therapeutic target for IBD patients.
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Affiliation(s)
- Mariko Komuro
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Masaki Nagane
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan; Center for Human and Animal Symbiosis Science, Azabu University, Sagamihara, Kanagawa, Japan.
| | - Rikito Endo
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Takashi Nakamura
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Takayoshi Miyamoto
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Chiaki Niwa
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Tomoki Fukuyama
- Laboratory of Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Hideyoshi Harashima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Naoyuki Aihara
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Junichi Kamiie
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Rimina Suzuki
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Tadashi Yamashita
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
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Nkiliza A, Parks M, Cseresznye A, Oberlin S, Evans JE, Darcey T, Aenlle K, Niedospial D, Mullan M, Crawford F, Klimas N, Abdullah L. Sex-specific plasma lipid profiles of ME/CFS patients and their association with pain, fatigue, and cognitive symptoms. J Transl Med 2021; 19:370. [PMID: 34454515 PMCID: PMC8401202 DOI: 10.1186/s12967-021-03035-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/09/2021] [Indexed: 12/19/2022] Open
Abstract
Background Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex illness which disproportionally affects females. This illness is associated with immune and metabolic perturbations that may be influenced by lipid metabolism. We therefore hypothesized that plasma lipids from ME/CFS patients will provide a unique biomarker signature of disturbances in immune, inflammation and metabolic processes associated with ME/CFS. Methods Lipidomic analyses were performed on plasma from a cohort of 50 ME/CFS patients and 50 controls (50% males and similar age and ethnicity per group). Analyses were conducted with nano-flow liquid chromatography (nLC) and high-performance liquid chromatography (HPLC) systems coupled with a high mass accuracy ORBITRAP mass spectrometer, allowing detection of plasma lipid concentration ranges over three orders of magnitude. We examined plasma phospholipids (PL), neutral lipids (NL) and bioactive lipids in ME/CFS patients and controls and examined the influence of sex on the relationship between lipids and ME/CFS diagnosis. Results Among females, levels of total phosphatidylethanolamine (PE), omega-6 arachidonic acid-containing PE, and total hexosylceramides (HexCer) were significantly decreased in ME/CFS compared to controls. In males, levels of total HexCer, monounsaturated PE, phosphatidylinositol (PI), and saturated triglycerides (TG) were increased in ME/CFS patients compared to controls. Additionally, omega-6 linoleic acid-derived oxylipins were significantly increased in male ME/CFS patients versus male controls. Principal component analysis (PCA) identified three major components containing mostly PC and a few PE, PI and SM species—all of which were negatively associated with headache and fatigue severity, irrespective of sex. Correlations of oxylipins, ethanolamides and ME/CFS symptom severity showed that lower concentrations of these lipids corresponded with an increase in the severity of headaches, fatigue and cognitive difficulties and that this association was influenced by sex. Conclusion The observed sex-specific pattern of dysregulated PL, NL, HexCer and oxylipins in ME/CFS patients suggests a possible role of these lipids in promoting immune dysfunction and inflammation which may be among the underlying factors driving the clinical presentation of fatigue, chronic pain, and cognitive difficulties in ill patients. Further evaluation of lipid metabolism pathways is warranted to better understand ME/CFS pathogenesis. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03035-6.
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Affiliation(s)
- Aurore Nkiliza
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA. .,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA.
| | - Megan Parks
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Adam Cseresznye
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Sarah Oberlin
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - James E Evans
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Teresa Darcey
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Kristina Aenlle
- Institute for NeuroImmune Medicine, VAMC, GRECC, Nova Southeastern University, Miami, USA
| | - Daniel Niedospial
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Michael Mullan
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Fiona Crawford
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
| | - Nancy Klimas
- Institute for NeuroImmune Medicine, VAMC, GRECC, Nova Southeastern University, Miami, USA
| | - Laila Abdullah
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL, 34243, USA.,James A. Haley Veterans' Hospital, 2040 Whitfield Ave, Tampa, FL, USA
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Simon MV, Basu SK, Qaladize B, Grambergs R, Rotstein NP, Mandal N. Sphingolipids as critical players in retinal physiology and pathology. J Lipid Res 2021; 62:100037. [PMID: 32948663 PMCID: PMC7933806 DOI: 10.1194/jlr.tr120000972] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/04/2020] [Indexed: 12/24/2022] Open
Abstract
Sphingolipids have emerged as bioactive lipids involved in the regulation of many physiological and pathological processes. In the retina, they have been established to participate in numerous processes, such as neuronal survival and death, proliferation and migration of neuronal and vascular cells, inflammation, and neovascularization. Dysregulation of sphingolipids is therefore crucial in the onset and progression of retinal diseases. This review examines the involvement of sphingolipids in retinal physiology and diseases. Ceramide (Cer) has emerged as a common mediator of inflammation and death of neuronal and retinal pigment epithelium cells in animal models of retinopathies such as glaucoma, age-related macular degeneration (AMD), and retinitis pigmentosa. Sphingosine-1-phosphate (S1P) has opposite roles, preventing photoreceptor and ganglion cell degeneration but also promoting inflammation, fibrosis, and neovascularization in AMD, glaucoma, and pro-fibrotic disorders. Alterations in Cer, S1P, and ceramide 1-phosphate may also contribute to uveitis. Notably, use of inhibitors that either prevent Cer increase or modulate S1P signaling, such as Myriocin, desipramine, and Fingolimod (FTY720), preserves neuronal viability and retinal function. These findings underscore the relevance of alterations in the sphingolipid metabolic network in the etiology of multiple retinopathies and highlight the potential of modulating their metabolism for the design of novel therapeutic approaches.
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Affiliation(s)
- M Victoria Simon
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Departamento De Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), Argentine National Research Council (CONICET), Bahía Blanca, Argentina
| | - Sandip K Basu
- Departments of Ophthalmology and Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Bano Qaladize
- Departments of Ophthalmology and Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Richard Grambergs
- Departments of Ophthalmology and Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Nora P Rotstein
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Departamento De Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), Argentine National Research Council (CONICET), Bahía Blanca, Argentina.
| | - Nawajes Mandal
- Departments of Ophthalmology and Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, USA.
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Wang L, Wang P, Wang D, Tao M, Xu W, Olatunji OJ. Anti-Inflammatory Activities of Kukoamine A From the Root Bark of Lycium chinense Miller. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20912088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Kukoamine A (Kuk A) is a naturally occurring bioactive spermine alkaloid found in the root bark of Lycium chinense, and it exerts various therapeutic effects including antioxidant, neuroprotective, anti-inflammatory, and antidiabetic effects. This study evaluated the anti-inflammatory properties of Kuk A against lipopolysaccharide (LPS)-induced inflammation in RAW 264.7 macrophage cells and carrageenan-induced paw edema in rats. Pretreatment of cells with Kuk A significantly inhibited the production of reactive oxygen species, nitric oxide, prostaglandin E2, cyclooxygenase-2 activity, tumor necrosis factor-α, interleukin-1β (IL-1β), and IL-6 in LPS-treated cells. In addition, pretreatment of rats with Kuk A significantly decreased inflammatory response to carrageenan-induced paw edema by alleviating proinflammatory cytokines in the serum, malondialdehyde levels in the liver and increasing the activities of liver antioxidant enzymes (superoxide dismutase, catalase, and glutathione peroxidase) of carrageenan-treated rats. These results suggest the protective role of Kuk A in acute inflammatory reaction and could be useful in the treatment of inflammatory-related disorders.
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Affiliation(s)
- Lin Wang
- Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Peipei Wang
- Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Dandan Wang
- Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Mengqing Tao
- Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Wenke Xu
- Yijishan Hospital of Wannan Medical College, Wuhu, China
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Glucosylceramide modifies the LPS-induced inflammatory response in macrophages and the orientation of the LPS/TLR4 complex in silico. Sci Rep 2018; 8:13600. [PMID: 30206272 PMCID: PMC6134110 DOI: 10.1038/s41598-018-31926-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/29/2018] [Indexed: 12/31/2022] Open
Abstract
Toll-like receptor 4 (TLR4) is activated by bacterial lipopolysaccharide (LPS), which drives the production of proinflammatory cytokines. Earlier studies have indicated that cholesterol- and glycosphingolipid-rich subregions of the plasma membrane (lipid domains) are important for TLR4-mediated signaling. We report that inhibition of glucosylceramide (GluCer) synthase, which resulted in decreased concentrations of the glycosphingolipid GluCer in lipid domains, reduced the LPS-induced inflammatory response in both mouse and human macrophages. Atomistic molecular dynamics simulations of the TLR4 dimer complex (with and without LPS in its MD-2 binding pockets) in membranes (in the presence and absence of GluCer) showed that: (1) LPS induced a tilted orientation of TLR4 and increased dimer integrity; (2) GluCer did not affect the integrity of the LPS/TLR4 dimer but reduced the LPS-induced tilt; and (3) GluCer increased electrostatic interactions between the membrane and the TLR4 extracellular domain, which could potentially modulate the tilt. We also showed that GCS inhibition reduced the interaction between TLR4 and the intracellular adaptor protein Mal. We conclude that the GluCer-induced effects on LPS/TLR4 orientation may influence the signaling capabilities of the LPS/TLR4 complex by affecting its interaction with downstream signaling proteins.
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10
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Acupuncture points can be identified as cutaneous neurogenic inflammatory spots. Sci Rep 2017; 7:15214. [PMID: 29123119 PMCID: PMC5680247 DOI: 10.1038/s41598-017-14359-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/10/2017] [Indexed: 02/07/2023] Open
Abstract
Acupuncture, a traditional medical procedure practised for over 2000 years in Asia, stimulates specific but poorly defined sites called acupoints. To date, no unique anatomical acupoint structures have been found. However, noxious sensory signals from visceral organs produce hypersensitive spots on the skin (neurogenic spots), caused by cutaneous neurogenic inflammation, in the dermatome that overlaps with visceral afferent innervations. Here, we show that an acupoint is one form of neurogenic inflammation on the skin. Various studies have demonstrated that acupoints show mechanical hypersensitivity and have high electrical conductance. Stimulation of acupoints produces needling sensations caused by the activation of small diameter afferent nerve fibres and therapeutic effects on the associated visceral organs, which is likely due to the release of endogenous opioids. The present study provides experimental evidence that neurogenic spots exhibit all the characteristics of the acupoints listed above. In addition, the stimulation of neurogenic spots by electrical, mechanical, or chemical means alleviated pathological conditions in rat colitis and hypertension models via the endogenous opioid system. Our results suggest that acupoints associated with internal organs may be identical to neurogenic inflammatory spots on the skin, which are produced by activation of somatic afferents in abnormal conditions of visceral organs.
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11
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Deguchi H, Navarro S, Payne AB, Elias DJ, Dowling NF, Austin HD, España F, Medina P, Hooper WC, Griffin JH. Low level of the plasma sphingolipid, glucosylceramide, is associated with thrombotic diseases. Res Pract Thromb Haemost 2017; 1:33-40. [PMID: 29202121 PMCID: PMC5703432 DOI: 10.1002/rth2.12018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Essentials Minor abundance plasma lipids, eg, glucosylceramide, can modulate blood coagulation reactions This lipid was measured in plasmas of 1 myocardial infarction and 2 venous thrombosis populations Low plasma glucosylceramide levels were found in each population compared to matched controls Low plasma glucosylceramide levels are associated with venous and arterial thrombosis
Background One previous pilot study suggested the association of low plasma glucosylceramide (GlcCer) levels with venous thrombosis (VTE) risk. Objective We aimed to confirm and evaluate the association of low plasma GlcCer levels with VTE and myocardial infarction (MI) occurrence, respectively. Patients and Methods We evaluated the association of GlcCer in two independent case‐control studies of Caucasian VTE populations (N=210 and 636) and one case‐control study of Caucasian MI patients (N=345). Result Plasma GlcCer levels in VTE patients were lower compared to controls in two independent VTE populations (5.0 vs 5.8 μg/mL, P=.003 for the Scripps registry, and 5.6 vs 6.0 μg/mL, P=.001 for the Valencia registry, respectively). A low plasma GlcCer level (below tenth percentile of controls) was associated with increased VTE occurrence (odds ratio [OR]=3.7 [95% CI, 1.8‐7.9] for Scripps registry and OR=2.1 [95% CI, 1.3‐3.3] for Valencia registry, respectively). For the MI study, the median GlcCer plasma level was lower in MI patients than in controls (4.3 vs 5.6 μg/mL, P<.001), and a low level of GlcCer (below tenth percentile of control) was associated with higher MI occurrence (OR=7.7, [95% CI, 4.3‐13.8]). Conclusion Lower concentration of GlcCer was associated with VTE occurrence in 2 independent studies and also with MI occurrence in 1 study.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Silvia Navarro
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Haemostasis, Thrombosis, Atherosclerosis and Vascular Biology Research Group, La Fe Medical Research Institute, Valencia, Spain
| | - Amanda B Payne
- Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Division of Blood Disorders, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Darlene J Elias
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Scripps Clinic and Scripps Green Hospital, La Jolla, CA, USA
| | - Nicole F Dowling
- Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Division of Blood Disorders, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Harland D Austin
- Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Francisco España
- Haemostasis, Thrombosis, Atherosclerosis and Vascular Biology Research Group, La Fe Medical Research Institute, Valencia, Spain
| | - Pilar Medina
- Haemostasis, Thrombosis, Atherosclerosis and Vascular Biology Research Group, La Fe Medical Research Institute, Valencia, Spain
| | - W Craig Hooper
- Division of Blood Disorders, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
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12
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Deguchi H, Elias DJ, Griffin JH. Minor Plasma Lipids Modulate Clotting Factor Activities and May Affect Thrombosis Risk. Res Pract Thromb Haemost 2017; 1:93-102. [PMID: 29082360 PMCID: PMC5658053 DOI: 10.1002/rth2.12017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Essentials Circulating blood contains hundreds of lipids, many of which might influence blood coagulation. Recent discoveries about circulating lipids that can affect blood coagulation are reviewed. Minor abundance plasma lipids can modulate thrombin generation via direct effects on factor Xa. Variations in minor abundance plasma lipids can influence thrombin generation and thrombosis risk.
Abstract Different minor abundance plasma lipids significantly influence thrombin generation in vitro and significant differences in such lipids are linked to risk for venous thrombosis. Some plasma sphingolipids including glucosylceramide, lyso‐sulfatide and sphingosine have anticoagulant properties whereas, conversely, some plasma phospholipid derivatives, including certain lyso‐phospholipids and ethanolamides, have procoagulant properties. Plasma metabolite profiling of venous thrombosis patients showed association of venous thrombosis with decreased plasma long‐chain acylcarntines, leading to discovery of their anticoagulant activity as inhibitors of factor Xa. Inhibition of factor Xa by acylcarnitines does not require the protein's Gla‐domain, emphasizing an expanded framework for the paradigm for lipid‐clotting factor interactions. Overall, whether by genetics or environment, alterations in the dynamics of lipid metabolism linked to an altered lipidome may contribute to regulation of blood coagulation because imbalances between physiologic procoagulant and anticoagulant lipids may contribute to excessive thrombin generation that augments risk for thrombosis.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Darlene J Elias
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA.,Scripps Clinic and Scripps Green Hospital, La Jolla, CA, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA.,Department of Medicine, University of California San Diego, La Jolla, CA, USA
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13
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Heme Oxygenase-1/Carbon Monoxide-regulated Mitochondrial Dynamic Equilibrium Contributes to the Attenuation of Endotoxin-induced Acute Lung Injury in Rats and in Lipopolysaccharide-activated Macrophages. Anesthesiology 2017; 125:1190-1201. [PMID: 27575447 DOI: 10.1097/aln.0000000000001333] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Sepsis-associated acute lung injury remains the major cause of mortality in critically ill patients and is characterized by marked oxidative stress and mitochondrial dysfunction. Mitochondrial dynamics are indispensable for functional integrity. Additionally, heme oxygenase (HO)-1/carbon monoxide conferred cytoprotection against end-organ damage during endotoxic shock. Herein, we tested the hypothesis that HO-1/carbon monoxide played a critical role in maintaining the dynamic process of mitochondrial fusion/fission to mitigate lung injury in Sprague-Dawley rats or RAW 264.7 macrophages exposed to endotoxin. METHODS The production of reactive oxygen species, the respiratory control ratio (RCR), and the expressions of HO-1 and mitochondrial dynamic markers were determined in macrophages. Concurrently, alterations in the pathology of lung tissue, lipid peroxidation, and the expressions of the crucial dynamic proteins were detected in rats. RESULTS Endotoxin caused a 31% increase in reactive oxygen species and a 41% decrease in RCR levels (n = 5 per group). In parallel, the increased expression of HO-1 was observed in lipopolysaccharide-stimulated macrophages, concomitantly with excessive mitochondrial fission. Furthermore, carbon monoxide-releasing molecule-2 or hemin normalized mitochondrial dynamics, which were abrogated by zinc protoporphyrin IX. Additionally, impaired mitochondrial dynamic balance was shown in Sprague-Dawley rats that received lipopolysaccharide, accompanied by pathologic injury, elevated malondialdehyde contents, decreased manganese superoxide dismutase activities, and lowered RCR levels in rat lung mitochondria. However, the above parameters were augmented by zinc protoporphyrin IX and were in turn reversed by hemin. CONCLUSIONS The HO-1/carbon monoxide system modulated the imbalance of the dynamic mitochondrial fusion/fission process evoked by lipopolysaccharide and efficiently ameliorated endotoxin-induced lung injury in vivo and in vitro.
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Wang J, Zhang P, He H, Se X, Sun W, Chen B, Zhang L, Yan X, Zou K. Eburicoic acid from Laetiporus sulphureus (Bull.:Fr.) Murrill attenuates inflammatory responses through inhibiting LPS-induced activation of PI3K/Akt/mTOR/NF-κB pathways in RAW264.7 cells. Naunyn Schmiedebergs Arch Pharmacol 2017; 390:845-856. [PMID: 28577049 DOI: 10.1007/s00210-017-1382-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 05/17/2017] [Indexed: 01/14/2023]
Abstract
Excessive activation of macrophages has been implicated in various types of inflammatory injury. Suppression of macrophage activation would have therapeutic benefits, leading to the alleviation of the progression of inflammatory diseases. Eburicoic acid (EA) is one of main bioactive components isolated from Laetiporus sulphureus (Bull.:Fr.) Murrill. In our previous study, we found that EA possessed anti-inflammatory activities. However, the cellular and molecular mechanisms underlying its anti-inflammatory activities remain to be poorly understood. The present study aimed to further evaluate its effect on lipopolysaccharide (LPS)-induced inflammatory responses in RAW264.7 macrophage cells. We investigated the anti-inflammatory effect by modulating LPS-induced activation of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR)/nuclear transcription factor-κB (NF-κB) pathway in RAW264.7 cells. The results showed that EA caused no obvious cytotoxicity, and its suitable concentrations on RAW264.7 cells were in the range from 0.02 to 0.08 μM. EA significantly inhibited the releases of inflammatory mediators, nitrite oxide (NO) and prostaglandin E2 (PGE2); suppressed mRNA and protein expression levels of inducible nitrite oxide synthase (iNOS) and cyclooxygenase-2 COX-2 and pro-inflammatory cytokine TNF-α, IL-6, and IL-1β; and reduced levels of phosphorylated PI3K, Akt, mTOR, and NF-κBp65 in LPS-induced RAW264.7 cells in dose- and time-dependent manners. These aforementioned results indicated that EA executed anti-inflammatory effect on LPS-induced RAW264.7 cells, and this effect might be achieved via suppressing the PI3K/Akt/mTOR/NF-κB signaling pathway and inhibiting the LPS-induced productions of inflammatory mediators and pro-inflammatory cytokines.
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Affiliation(s)
- Junzhi Wang
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China.,Hubei Research Institute of Tujia Medicine, China Three Gorges University, Yichang, Hubei, China
| | - Pan Zhang
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China
| | - Haibo He
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China. .,Hubei Research Institute of Tujia Medicine, China Three Gorges University, Yichang, Hubei, China.
| | - Xinxin Se
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China
| | - Wenjun Sun
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China
| | - Beiyan Chen
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China
| | - Lin Zhang
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China
| | - Ximing Yan
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, Hubei, 443002, China.,Hubei Research Institute of Tujia Medicine, China Three Gorges University, Yichang, Hubei, China
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15
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Kwon IS, Kwak JH, Pyo S, Lee HW, Kim A, Schmitz FJ. Oscarellin, an Anthranilic Acid Derivative from a Philippine Sponge, Oscarella stillans, as an Inhibitor of Inflammatory Cytokines in Macrophages. JOURNAL OF NATURAL PRODUCTS 2017; 80:149-155. [PMID: 28093915 DOI: 10.1021/acs.jnatprod.6b00787] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new anthranilic acid derivative (1) was isolated from a Philippine sponge, Oscarella stillans (Bergquist and Kelly). The structure of compound 1, named oscarellin, was determined as 2-amino-3-(3'-aminopropoxy)benzoic acid from spectroscopic data and confirmed by synthesis. We examined the immunomodulating effect of compound 1 and its mechanism in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. Our data indicated that the expression of tumor necrosis factor-α (TNF-α) and interleukin (IL)-6 were significantly reduced by the pretreatment of 1 (0.1-10 μM) for 2 h. In addition, compound 1 suppressed activation of extracellular signal-regulated kinase 1/2 (ERK1/2) and c-Jun NH2-termimal kinase (JNK), but not p38 mitogen-activated protein kinase (MAPK) in LPS-stimulated RAW 264.7 cells. Compound 1 abrogated LPS-induced nuclear factor-κB (NF-κB) and activator protein-1 (AP-1) activities, whereas the induction of activating transcription factor-3 (ATF-3) was increased. Taken together, our results suggest that compound 1 attenuates pro-inflammatory cytokines via the suppression of JNK, ERK, AP-1, and NF-κB and the activation of the ATF-3 signaling pathway.
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Affiliation(s)
- Ii-Seul Kwon
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - Jong Hwan Kwak
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - Suhkneung Pyo
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - Hee-Weon Lee
- School of Pharmacy, Sungkyunkwan University , Suwon 16419, Korea
| | - AeRyon Kim
- Department of Chemistry and Biochemistry, University of Oklahoma , Norman, Oklahoma 73019, United States
| | - Francis J Schmitz
- Department of Chemistry and Biochemistry, University of Oklahoma , Norman, Oklahoma 73019, United States
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16
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Arulselvan P, Tan WS, Gothai S, Muniandy K, Fakurazi S, Esa NM, Alarfaj AA, Kumar SS. Anti-Inflammatory Potential of Ethyl Acetate Fraction of Moringa oleifera in Downregulating the NF-κB Signaling Pathway in Lipopolysaccharide-Stimulated Macrophages. Molecules 2016; 21:molecules21111452. [PMID: 27809259 PMCID: PMC6273666 DOI: 10.3390/molecules21111452] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/22/2016] [Accepted: 10/24/2016] [Indexed: 01/18/2023] Open
Abstract
In the present investigation, we prepared four different solvent fractions (chloroform, hexane, butanol, and ethyl acetate) of Moringa oleifera extract to evaluate its anti-inflammatory potential and cellular mechanism of action in lipopolysaccharide (LPS)-induced RAW264.7 cells. Cell cytotoxicity assay suggested that the solvent fractions were not cytotoxic to macrophages at concentrations up to 200 µg/mL. The ethyl acetate fraction suppressed LPS-induced production of nitric oxide and proinflammatory cytokines in macrophages in a concentration-dependent manner and was more effective than the other fractions. Immunoblot observations revealed that the ethyl acetate fraction effectively inhibited the expression of inflammatory mediators including cyclooxygenase-2, inducible nitric oxide synthase, and nuclear factor (NF)-κB p65 through suppression of the NF-κB signaling pathway. Furthermore, it upregulated the expression of the inhibitor of κB (IκBα) and blocked the nuclear translocation of NF-κB. These findings indicated that the ethyl acetate fraction of M. oleifera exhibited potent anti-inflammatory activity in LPS-stimulated macrophages via suppression of the NF-κB signaling pathway.
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Affiliation(s)
- Palanisamy Arulselvan
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Woan Sean Tan
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Sivapragasam Gothai
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Katyakyini Muniandy
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Sharida Fakurazi
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Norhaizan Mohd Esa
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Abdullah A Alarfaj
- Department of Botany and Microbiology, King Saud University, Riyadh 11451, Saudi Arabia.
| | - S Suresh Kumar
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
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17
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Guo C, Yang L, Luo J, Zhang C, Xia Y, Ma T, Kong L. Sophoraflavanone G from Sophora alopecuroides inhibits lipopolysaccharide-induced inflammation in RAW264.7 cells by targeting PI3K/Akt, JAK/STAT and Nrf2/HO-1 pathways. Int Immunopharmacol 2016; 38:349-56. [DOI: 10.1016/j.intimp.2016.06.021] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 06/18/2016] [Accepted: 06/21/2016] [Indexed: 12/29/2022]
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18
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Han WB, Zhang AH, Deng XZ, Lei X, Tan RX. Curindolizine, an Anti-Inflammatory Agent Assembled via Michael Addition of Pyrrole Alkaloids Inside Fungal Cells. Org Lett 2016; 18:1816-9. [DOI: 10.1021/acs.orglett.6b00549] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Wen Bo Han
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
| | - Ai Hua Zhang
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
- State
Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Xin Zhao Deng
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
| | - Xinxiang Lei
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Ren Xiang Tan
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
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19
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Yeom M, Kim JH, Min JH, Hwang MK, Jung HS, Sohn Y. Xanthii fructus inhibits inflammatory responses in LPS-stimulated RAW 264.7 macrophages through suppressing NF-κB and JNK/p38 MAPK. JOURNAL OF ETHNOPHARMACOLOGY 2015; 176:394-401. [PMID: 26560439 DOI: 10.1016/j.jep.2015.11.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/12/2015] [Accepted: 11/06/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Xanthii fructus (XF) has long been used to treat a variety of inflammatory conditions in Korean traditional medicine, but the underlying mechanisms that could explain the anti-inflammatory actions of XF remain largely unknown. AIM OF THE STUDY This study aimed to elucidate the anti-inflammatory effects of X. fructus (XF) and to examine its underlying molecular mechanisms in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. MATERIALS AND METHODS The effect of XF on LPS-induced mRNA and protein expressions of inflammatory mediators and cytokines were determined. Moreover, the activation of the nuclear factor-κB (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways and the expression of heme oxygenase-1 (HO-1) were explored to elucidate the anti-inflammatory mechanisms. RESULTS XF significantly inhibited LPS-induced production of inflammatory mediators, interleukin-6 (IL-6), nitric oxide (NO), and prostaglandin E2 (PGE2), without any cytotoxicity. However, it did not affect tissue necrosis factor (TNF)-α or IL-1β production in LPS-stimulated RAW 264.7 cells. Expression levels of inducible nitric oxide synthase (iNOS) mRNA and protein were inhibited dose-dependently by XF in LPS-stimulated RAW 264.7 cells, but there were no changes in cyclooxygenase-2 (COX-2) mRNA and protein. XF significantly attenuated LPS-induced phosphorylation and degradation of inhibitory kappa Bα (IκBα) and consequently reduced the nuclear translocation of p65 NF-κB. Pretreatment with XF also strongly inhibited the LPS-induced phosphorylation of p38 kinase and JNK, whereas the phosphorylation of ERK1/2 was not affected. In addition, XF led to an increase in HO-1 expression. CONCLUSION Taken together, our findings support that XF inhibits LPS-induced inflammatory responses by blocking NF-κB activation, inhibiting JNK/p38 MAPK phosphorylation, and enhancing HO-1 expression in macrophages, suggesting that it could be an attractive therapeutic candidate for various inflammatory diseases.
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Affiliation(s)
- Mijung Yeom
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Jae-Hyun Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Ju-Hee Min
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Man Ki Hwang
- Inuri Medical Group, Seoul 137-877, Republic of Korea
| | - Hyuk-Sang Jung
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Youngjoo Sohn
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea.
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